It's been a fixture in city skyline, alerting people to changes in the weather for generations, but the rapidly shifting colors of the iconic gas light fame on Monday night, may have had some wondering what sort of wild weather was on its way.

"I don't know what it means when the flame is out. I've never seen the flame out," Baden said.

That's when building manager Jim Drescher's phone lit up. So with Drescher and his team, WISN 12 News climbed to the rooftop in search of answers.

The problem, he explained, was a computer glitch in a new LED lighting system, and so the flame was shut off until it could be repaired.

"Well, our computer system had a mind of its own, and while it said one thing on the computer, it was actually doing something else on the flame," Drescher said.

The new LED lights replace the flame's traditional neon glow.

The neon tubes are marked for the blue, gold and red -- the iconic colors that Milwaukeeans have seen light up the night sky for more than half a century. Those colors will still be there, but with the new lighting system, people may see some things that you haven't seen before.

There will be scores of new colors that will allow it to be lit for things like charities or sports teams or local events, and as always, the weather -- no matter what it may be.

WISN 12 News was told that with the old neon lights, it cost more than $2,000 a month to light the flame just three hours each night.

With the LED lights, the cost is just $25 a month to keep it lit all night, every night.